Improvement in paper-folding machines



panyin g drawingfin "whichf-` wherever it occurs.

UNITEIDSTAT 'PATENT Genion.'

- fiMiRoi/EMENTIN"PAER-FOLDING MACHINES.

` Ispeein@anon"iftljiliing part ofLetrers` raten; No. 105,424, dated July 19, 1810.

Be it known that I, CYRS CHAMBERS, J ri ',"of the city and county of `Philadelphiaoin the IState of Pennsylvaniayhave invented certain' "new and useful Improvements in PaperlFoldj ingMachines; andi do `lzlfereby declare the following to bea full and correct description l` f fof `the same, reference beinglhadftothe accom` or top .viewoffthe ma- Figure l" is afplan "chine" Fig. 2 is a side elevation of the same. V

Fig. 3 is ,an end view'of" the "fra-me,.showingA the'curvature of 1thewleg ",for the reception of A' the packingtrongh. "Figsgf, 15, and 6 aredetails, illustratingthe` relations of thesecond and third stops. .`Fig.`,7"is a1 vertical trans- Verse section of the" drop-roller. .o

o, same letter indicatesnthe samefpartl The tra improvement consists in adapting the machine known as` the Chambersf12mo folder 7. to `the folding "ofo, afforty-eight-page sheet bythe addition ofa pair of rollers, which o impart to `such a sheet `a preliminary fold ,i prior to its entering the 1,2,mo partof themachine. i o o ,o M

The second improvement consists in placing an additional roller Aalongside of the second pair of folding'a'ollers, and alittle above'their level, for the pnrposejof raising and carrying clear of said rollers fthe forward end yof the once-folded sheet, which must projectlbeyond said rollers when the sheet is in position to be acted upon by the second foldingknite. o

, The third improvenient` consists in attachi ingto theidrop-rollerh,`for starting the -in-` set around the reversing-roller, a concave shield or guide, to guide theinset under the stationary fingers. In my `Patent No. 30,719, dated November27, 1860, for the l2mo folder, the reversingroller is marked I, and the stationary fingers are marked S on the drawings. Grooves are turned in the drop-roller, into which Jfingers project, to guide the inset from the bight ofthe rollers to the shield, and prevent its following around the drop-roller.f

The fourth improvement consists in a device for adjusting the sheet on Aits passage from the third to the fourth pair of rollers, so that every sheet will reach the third stop in precisely the same position. i o

rlhe fifth improvement consists in 'a device for preventing the back plunger of the packing-trough from tilting or rising up as it is moved along the trough.

rlhe sixth improvement consists in the aro rangement of an alarm to indicate that the packing-trough is lled with folded sheets.

The seventh improvement consists in giving an inward curve to that leg of the frame which is near the rear end of the packing-trough, so that the trough may be received in said curve and be accessible throughout its entire length. In general construction and mode of operao tion, after the making of the iirst fold, the machine is identical with the 12u10 folder patented by me November 27, 1860. Those parts andinovements, therefore, which are common to thatmachine and the one now under considera'tion need not be particularly described.

The principles on which the sheets are folded, propelled, guided, arrested, severed, inset, packed, and delivered, are the same in both. .The present improvements extend the capacity ofthe l21no machine, and add to the convenience and efficiency of all the folders to which they are applicable. .In` the accompanying drawing, A marks the frame of the machine; B, the table onwhich the-,sheets to be folded are placed; and C, the metallic table, over which they are passed singly by the operator, each being properly registered in the position to receive the blow of the first foldingknife, D, attached to the end of arm E.

rllhe table G, Fig. 2, has a slot in it, imme diately over the line of `contact of the iirst pair of rollers, a c. The` addition Aof this pair of rollers and the knife D to the l2mo machine is theiirst improvement` hereinbefore referred to. These rollers receive the bight ofthe sheet from the knife D, and impart to it the first fold, which is directly across the middle. They deliver it to endless tapes, which run from the rollers a a to the second pair of rollers, b b, and carry the sheet to the first stop, s', assisted by the roller e, placed at the side of the- The forty-eightpage sheet, being now once folded, presents, as to its further folding, the same problem as the twenty-four-page sheet, or double 12mo, and is treated just as though it was a single sheet of twenty-four pages. The further operation is therefore fully shown in my Patent No. 30,719, before referred to, and consists in the severance of the inset by the cutters on rollers b I), and the further folding and inseting of the sheet by the rollers c c and d d and the knives H and J, and the delivery of the sheet 'completely folded to the packingtrough T, ready Yfor the binder.

The third improvement is clearly illustrated in Fig. 7 of the drawing. Its purpose is to guide the inset positively around the {reversing-roller. 1t consists in providing the arm or frame of the drop-roller h with a curved or concave shield or guide, curved to fit the periphcry of the reversing-roller X. Shall fingers or guides project from the curved part It and enter grooves in the drop-roller It', to prevent the sheet from turning up between the drop-roller and shield.

The fourth improvement is illustrated in Figs. 4, 5, and 6, of which Fig. 4 is a plan, Fig. 5 a side elevation, and Fig. 6 a front elevation, of the second and third stops, j and 7c', in their proper relative positions. The improvement consists in a projection, l', inclined downward and outward from the second stop, j, and in the path of the outset issuing from between the third pair of folding-rollers, c c, and the inset issuing 'from around the reversin g-roller X on their way to the third stop, k'. This inclined face Z stands a little in front of the face of the second stop, j', so that if the outset and inset should vary a little as they approach the third stop, their folded edges will strike the inclined projection, and be thereby moved sidewise, so as always to strike the third stop, 7c', in the same position relatively to the face of the second stop.

The fifth improvement is shown in Fig. 2, and consists in projecting ribs m on the upper edges of the fillets n, attached to the outer and upper edges of the packing-trough T, on which the springs of the sliding plunger W bear, so as to allow the wide ends of the springs p to bear on the fillets n', and catch under the ribs m', for the purpose of preventing the plunger from rising or tilting out of the trough. That part of the spring p which catches under the rib m projects backward and forward, as shown.

The sixth improvement, which consists-of an alarm to give notice of the fact that the trough is full of folded sheets, is illustrated in Fig. 2. A bell tongue or clapper, e', is pivoted at the end of the trough T, so that when raised up it will incline slightly backward into the trough, as shown, and so stand, in which position it is in the line of motion of thc sliding plunger W', which will throw down the clapper when it comes in contact with it.

When thrown down, the clapper strikes the bell d and gives the required notice, indicatingthat the trough is full. When this clapper is down it is out of the way of the plunger, and does not interfere with its removal or that of the folded sheets.

The last improvement is shown in Fig. 3, and consists in giving an inward curve to the leg of the frame near the rear end of the packing trough, so that the trough may be placed under the side of the machine and parallel therewith, and no obstruction be presented to the removal of the folded sheets from the trough when full. The trough is supported at the rear end by an upright rising from the curved leg, as shown.

Having thus fullydescribed my improvements, what I claim, and desire to secure by Letters Pat-ent, is-

1. Placing by the side of a pair of foldingrollers an additional roller, c, a little above their level, for the purpose of raising the forward end of the sheet and carrying the paper clear of said rollers, as described.`

2. The concave guide i', attached to and operated 'by the drop-roller frame, as set forth.

3. The projection l on the second stop, j', arranged and operating in the manner stated.

4. The projecting rim m on the packing box or trough, in combination with the sliding spring p on the plunger W', as and for the purpose described.

5. The bell-clapper e and bell d', attached to the trough and operated by the sliding plunger, in the manner and for the purpose stated.

The above specification of my said invention signed and witnessed at Boston this 17th day of August, A. D. 1868.

GYRUS CHAMBERS, JR.

Witnesses:

W. W. SWAN, CHAs. F.l STANsBURY. 

